Smart Fluorescence Materials that Are Controllable by Hydrostatic Pressure: Peptide−Pyrene Conjugates

Abstract

This is the author manuscript accepted for publication and has undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record.

Ground- and excited-state dynamic control of an anion receptor by hydrostatic pressure

“…S4 in the ESI †) as is the case with the UV/vis absorption data (see Table 1). The degree of a F (À0.85 to À1.01 cm À1 MPa À1 ) is also the same as the data obtained for common uorescence dyes, 54,57,59 but the quenching behavior is somewhat puzzling. In general, uorescence intensities of solutions of emissive dyes upon hydrostatic pressurization follow the Förster-Hoffmann equation [log(I F ) ¼ A log(h) + B], 27 where uorescence intensity (I F ) increases with pressureinduced viscosity (h) increasing due to the suppression of collisional deactivation by solvent, and thus increase.…”

“…21 Since the hydrostatic pressure effect on the red shi is generally observed as ca. 1 cm À1 MPa À1 in using common organic dyes, [54][55][56][57][58][59][60][61][62][63] the a A values obtained in toluene, chloroform and dichloromethane are reasonably pronounced as the general hydrostatic-pressureinduced spectral change, which means that a particular conformational change in the foldamer skeleton does not occur upon pressurization. Very interestingly, only in acetonitrile, the 0-0 absorption band is quite suppressed under low pressures, compared to the 0-1 band.…”

“…Indeed, we have recently revealed that optical properties, molecular and biomolecular recognition behavior and photo-physical/chemical processes in solutions of various molecular, supramolecular, macromolecular and biomacromolecular systems are precisely regulated by hydrostatic pressure. [53][54][55][56][57][58][59][60][61][62][63] Hence, these trends prompted us to newly investigate an applicable supramolecular recognition system under hydrostatic pressures.…”

Hydrostatic‐Pressure‐Controlled Molecular Recognition: A Steroid Sensing Case Using Modified Cyclodextrin

“…The high‐pressure apparatus was used for spectroscopic measurements. The details were reported previously [59–64] . Sapphire windows were employed for UV/vis and fluorescence spectroscopy and lifetime measurements, while birefringence‐free diamond windows were employed for circular dichroism spectroscopy.…”

“…The effects on homogeneous solutions upon hydrostatic pressurization are presented herein, rather than the solid‐state chemistry under high pressure using diamond anvil cells [57,58] . Specifically, we have so far demonstrated that emission behavior of the mechanochromic luminogens [59,60] and the chromophoric polymers, [61,62] solvatochromism of the Reichardt's dye, [63] and chiroptical properties of the hexaarylbenzenes [64] are critically regulated by hydrostatic pressure. Therefore, these research trends prompted us to construct a novel pressure‐controlled molecular recognition system.…”